Received: 15 November 2018
Revised: 16 March 2019
Accepted: 20 March 2019
First Online: 1 April 2019
Compliance with ethical standards
: The study was carried out in compliance with the Helsinki Declaration. Internal Review Board approval was obtained from the Ethics Committee of Carmel Medical Center. Requirement for individual patient consent forms was waived due to the retrospective, observational nature of the study.